How To Fix UCF8051 - Automatic line items contain an error; posting is not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: UCF8 - Messages for Manual Journal Entry

• Message number: 051

• Message text: Automatic line items contain an error; posting is not possible

What causes this issue?

Posting is not possible because the automatic line items contain errors.
The original and automatic line items are not consistent since the
characteristics have been changed.

System Response

The document cannot be posted.

How to fix this error?

Start the manual posting task again and re-enter the original line
items. Then you can generate the automatic line items correctly,
enabling the document to be posted.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.